Buying a 2000 z3

I'm about to pull the trigger on a purchase of a 2000 bmw z3 2.5 in dakar yellow. it has 63k miles and i'm getting it for 13,200. i'm i getttin ripped? also, how dependable is this car before i go buy it and raise my insurance rates. i may be picking it up in two days to replace my 240sx (110k miles, 1992, any z3 is a step up from there i'm sure)